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CAT to TYS: distance & flight time
Cascais (Cascais Airport) → Knoxville (McGhee Tyson Airport)
3,990 mi
6,421 km · 3,467 nm
8h 17m
estimated nonstop flight time
-5h
time difference · heading west
See live CAT→TYS fares Phone-only fares on this route — call free
Flight time details
3,990 miles nonstop takes roughly 8h 17m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 5-hour time set-back when reading arrival times on your ticket.
The two airports
- CAT — Cascais Airport · Cascais, Portugal
- TYS — McGhee Tyson Airport · Knoxville, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near CAT
- LIS · Humberto Delgado Airport (Lisbon Portela Airport)12 mi away
- AVR · Alverca Air Base21 mi away
- QLR · Monte Real Air Base80 mi away
- BYJ · Beja Airport / Airbase89 mi away
Near TYS
- MMI · McMinn County Airport43 mi away
- HDI · Hardwick Field62 mi away
- CSV · Crossville Memorial Whitson Field62 mi away
- AVL · Asheville Regional Airport86 mi away
Frequently asked questions
How far is CAT from TYS?
The flight distance from Cascais (CAT) to Knoxville (TYS) is 3,990 miles (6,421 km, 3,467 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CAT to TYS?
A nonstop flight takes about 8h 17m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Cascais and Knoxville?
Knoxville is 5 hours behind Cascais.
What is the cheapest way to fly from CAT to TYS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CAT–TYS that never appear on search engines, with no booking fees.